The BMW 535i, chassis code E34, represents a distinguished executive luxury sedan produced from 1988 through 1991. This model is celebrated for its sophisticated blend of comfort and BMW's signature driving dynamics, offering a premium experience that set it apart from competitors like the Mercedes-Benz W124 E-Class and Audi V8 Quattro. Engineered with a focus on driver engagement and robust build quality, the 535i exemplifies a commitment to performance and lasting reliability, making it a highly regarded vehicle in its segment. This comprehensive factory service manual provides essential information for the maintenance and repair of your BMW 535i (E34) from 1988-1991. Covering over 1500 pages of factory-level detail, this English-language manual offers in-depth guidance on all major vehicle systems, including engine mechanicals and management, transmissions (manual and automatic), drivetrain, suspension, steering, brakes, electrical systems, and climate control. It details routine maintenance procedures, complex repair and rebuild instructions, troubleshooting diagnostics, and specific technical data, empowering owners and technicians to preserve the optimal performance and integrity of this exceptional vehicle.